CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative effect of CECL adoption	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Deficit Cumulative effect of CECL adoption	Accumulated Other Comprehensive Income	Class B Common Stock Common Stock
Balance a the beginning at Dec. 25, 2021	$ 66,375		$ 44,378	$ 157,658	$ (138,706)		$ 30	$ 3,015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of Common Stock	(95)		(105)	10
Restricted stock grants issued	0		580	(854)				274
Restricted stock grants forfeited	0		(6)	6
Stock-based compensation expense	154			154
Net loss	(3,357)				(3,357)
Other comprehensive loss	170						170
Balance at the end at Mar. 26, 2022	$ 63,247		44,847	156,974	(142,063)		200	3,289
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of Common Stock (in shares)	35,160
Restricted stock grants issued (in shares)	284,954
Balance a the beginning at Dec. 25, 2021	$ 66,375		44,378	157,658	(138,706)		30	3,015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(16,624)
Other comprehensive loss	170
Balance at the end at Sep. 24, 2022	50,251		44,862	157,132	(155,330)		200	3,387
Balance a the beginning at Mar. 26, 2022	63,247		44,847	156,974	(142,063)		200	3,289
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock grants issued	0		331	(429)				98
Stock-based compensation expense	197			197
Net loss	(4,487)				(4,487)
Balance at the end at Jun. 25, 2022	$ 58,957		45,178	156,742	(146,550)		200	3,387
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock grants issued (in shares)	142,957
Repurchases of Common Stock	$ (133)		(316)	183
Stock-based compensation expense	207			207
Net loss	(8,780)				(8,780)
Other comprehensive loss	0
Balance at the end at Sep. 24, 2022	$ 50,251		44,862	157,132	(155,330)		200	3,387
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of Common Stock (in shares)	105,381
Balance a the beginning at Dec. 31, 2022	$ 31,514	$ (198)	43,360	158,331	(173,784)	$ (198)	219	3,388
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of Common Stock	(44)		(168)	124
Class B converted into common stock	0		25					(25)
Stock-based compensation expense	197			197
Net loss	(1,758)				(1,758)
Other comprehensive loss	(5)						(5)
Balance at the end at Apr. 01, 2023	$ 29,706		43,217	158,652	(175,740)		214	3,363
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of Common Stock (in shares)	55,994
Balance a the beginning at Dec. 31, 2022	$ 31,514	$ (198)	43,360	158,331	(173,784)	$ (198)	219	3,388
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(5,878)
Other comprehensive loss	(16)
Balance at the end at Sep. 30, 2023	25,928		43,306	158,916	(179,860)		203	3,363
Balance a the beginning at Apr. 01, 2023	29,706		43,217	158,652	(175,740)		214	3,363
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock grants issued	0		120	(120)				0
Restricted stock grants forfeited	0		(31)	31
Stock-based compensation expense	171			171
Net loss	(1,726)				(1,726)
Other comprehensive loss	(6)						(6)
Balance at the end at Jul. 01, 2023	28,145		43,306	158,734	(177,466)		208	3,363
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	182			182
Net loss	(2,394)				(2,394)
Other comprehensive loss	(5)						(5)
Balance at the end at Sep. 30, 2023	$ 25,928		$ 43,306	$ 158,916	$ (179,860)		$ 203	$ 3,363